Printing telegraphy



- June 14,1927. 1 632,297

E. E. KLEINSCHMIDT v PRINTING TELEGRAPH! Filed Oct. 5. 1921 4 Sheets-Sheet 1 INVENTOR.

BY a

HKN

June 14, 1927.

E. E. KLEINSCHMIDT PRINTING TELEGRAPHY Filed Oct. 3. 1921 4 Shoots-Sheet 2 I N VEN TOR.

42% was A TTORNE Y.

June 14 1 927.

E. E. KLEINSCHMIDT PRINTING TELEGRAPH! 4 Sheets-Sheet 4 Filed Oct.

- IN VEN TOR. MW,

w ATTORNEYS Patented June- 14, .1927.

UNITED STATES PATENT. OFFICE.

EDWARD E. KLEINSCHMIDT, BROOKLYN, NEW YORK, ASSIGNOR, BY MESNE AS- SIGNMENTS, TO MORKRUM-KLEINSOHMIDT CORPORATION, OF CHICAGO, ILLINOIS,

A CORPORATION OF DELAWARE.

PRINTING TELEGRAPEY.

Application filed October 8, 1921. Serial 1V0. 504,868.

The present invention relates to transmitting mechanism for printing telegraphs employing the Baudot or similar codes and it as for its particular object the production 6 of an apparatus of great simplicity of construction and operation.

It furthermore combines perforated tape controlled automatic signal transmission with means for automatically interrupting the normal operation thereof and interpolating. the transmission of auxiliary signals,

such as service signals It also utilizes a single transmitting contact tongue for transmitting code si nal and service signal impulses by means 0 operating means which are in part only common to both sets of signal impulses.

It finally provides means for insuring perfect contact between the contact tongue and the marking and spacing contact respectively, whereby the chattering of the contacts incident to the reversal of current polarity is successfully eliminated.

Arrangements of this general character 35 are old in the art, as for instance, in the U. S. Patent #1,275,559, but .no effective efforts have been made to bring the mechanism to a simple form without decreasing its efliciency. The single transmitting contact shown in the U. S. Patent #1,299,608 has been combined in the present invention with operating mechanism therefor, which is under the double control of the main signalling means, as well as the service signalling means. A new tape feeding device is used as well as a new arrangement controlled by the tape for first automatically interrupting and then re-start-ing the transmitting mechanism, as-shown in the U. S. Patent #1,192,171.

One form of construction of the invention is shown in the drawings in which Fig. 1 is a front elevation, Fig. 2 a plan view partly in horizontal section thru the 4 main driving gear, Fig. 3 an elevation along the axis of the main driving shaft, Fig. 4 an elevation of the tape feeding mechanism, Fig. 5 a similar view of the interrupting and re-starting mechanism, Fig. 6 a plan view of a portion of the perforated tape and its feeding means, Fig. 7, a detail of the service signal transmitting mechanism and Fig. .8, an elevation showing the means for insuring perfect contact at the marking and spacing contacts.

The apparatus comprises a frame 10, suporting abase plate 11, provided with a ront bearing 12 and a rear .bearing13 for the shaft 14 of the main gear 15 which is in mesh with a driving worm 16, secured to a driving shaft 17, receiving rotary motion from a driving motor 18. The main gear 15 is in contact with a front friction disk 19 and a rear friction disk 20. The shaft 14 carries a plurality ofoperating cams 21 and a tape feed cam 22. .This tape feed cam operates a cam lever 23 provided with a cam shoe 24, riding upon the periphery of the tape feeding cam 22. The end of the cam lever 23 opposite to the cam shoe 24, is pivoted to a pawl arm 25, resiliently held a retaining spring 26 and carrying a pawl 2 sliding in a pawl guide 28, connected to the pawl arm 25 b vices 29. The paw 27 engages a ratchet 30, rotatable on the ratchet shaft 31, carrying the feed wheel 32, the peri heral pins of which are engaging the mi dle row of perforations of the tape 33. A jockeiy roller 34 isprovided on a lever 35 pivote on an adjustable bracket 36, for ositively locating the jockey roller in the teeth of the ratchet 30. The spring 37 holds the jockey roller 34 in close contact with teeth of the ratchet 30.

The cams 21 secured to the main shaft 14 are ada ted to engage a plurality of cam means of setting delevers 38, a l of which are pivoted on a shaft 39 and each resilientl held by a spring 40. The ends of the cam levers 38, opposite the ends engaged by the cams 21, move in a guide comb 41. Each of the cam levers 38 ermits to actuate a corresponding operattongue 49, adapted to make contact with either a spacing contact 51 or a marking contact 50. v

The perforated tape 33 travels under atape guide plate 52 and controls the movement of the selecting pins 45, as well known in transmission apparatus of this general character. A tape feed stop 53 is manually operated and arranged to depress the pawl 27 and hold the same out of engagement with the ratchet 30, so that for the period of depression of the feed stop, the feed movement of the tape is interrupted.

Fig. 5 illustrates the tape lever 60 consisting of a rod having a rectangular extension 61, normally resting upon the perforated tape 33, before it is fed into the transmitting mechanism. The lever 60 is rotatable on the shaft 62, and is rigidly connected to an arm 63. Pivotally connected .to a bracket on the stationary frame of the apparatus is a latch 64, having at its lower end a pin 65, connected by means of a helical spring 66, to the upper end of the arm 63. In raising the free end of the lever 60 and displacing the arm 63, the spring 66 exerts a pull upon the pin of the latch 64, bringing the latter into the path of rotation of a transmission stop 67, secured to the main shaft 14 and stopping the same. Near the free end of the lever 60 there is a lever guide 68, and resilient means 69 for holding the lever 60 in its extreme uppermost position from which it can be manually displaced to permit the re-starting of the transmission mechanism, by moving the latch 64 out of the path of rotation of the transmission stop 67.

The auxiliary or service signalling mechanism includes a shaft 70 provided at one end with a code wheel 71 and at the opposite end with a driving gear 72. This gear is in mesh with a pinion 73 on the main shaft 14. The pinion 73 is integral with the friction disc 20 of the main gear 15 and the service signalling mechanism is, therefor,

operated by the same gear 15 as the main signalling mechanism. The friction disc 19 on the face of the gear 15 oppositev to that of friction disc 20. actuates the main signal ling mechanism while the friction disc 20 actuates the service'signalling mechanism. Inasmuch as the simultaneous transmission of main signals and service signals would natur'ally result in the jumbling of signals and the formation of unintelligible combinations of current impulses, the transmission of two kinds of signals must take place in succession by means of a following arrangement.

A resilient lever 77 is secured to a shaft 78 which carries an arm 79 having at its upper end a roller 80 and held by a retaining spring 81 toward a disc 85. The arm 79 is provided with a detent 82 for stopping the rotation of the shaft 14 of the main signal transmitting device and a second detent 83 for stopping the rotation of the shaft 70 of the service signal transmitting device.

Shaft 14-of the main signal transmitting device carries a disc 84, Fig. 7, and shaft 70 of the service signal transmitting device, a similar disc 85. The disc 84 is provided with two diametrically opposite peripheral notches 86 and 87 and the disc with a similar single notch 88.

When the operatng handle 89, Fig. 1, is pushed to the right, and, assuming that the main signalling mechanism, including shaft 14, is now in action, the roller 80 rides on the periphery of disc 84 for the time of not more than half a revolution of the shaft 14 whereupon it enters one of the notches 86 or 87.

At this moment, the detent 83, normally resting in the notch 88, on account of the pull of spring 81, is removed from the notch 88 and the second detent 82 is, therefore brought into-the path of rotation of the stop arm 67 of the shaft 14. Keeping in mine that the main gear 15 is constantly rotating it will be seen that the friction disc 19 and all parts associated with it, including tilt operating cams 21 are held at rest by means of the stop arm .67, while the pinion 73, connected to the friction disc 20, is permitted to rotate, causing the rotation of the shafi 70 of the service signalling device and it: associated parts.

A lug 74 arranged on the driving gear 72 displaces the bell hammer 75 and operate: an audible signal on bell 76, indicating t1 the sending operator that the normal trans mission of signal impulses has been replace by the transmission of service signal im pulses.

The service signal code wheel 71 is pro vided with cams 90, of such a number am so distributed along the periphery o th code wheel, as to represent any desired se ries of pro-determined signals, for instanct carriage shift, the letter J and the car riage release. In the event that the signa represented on thecode wheel 71 is to b repeated, the operator holds the handle 8 until the bell 76 is struck a second, thin or more times, indicating. the number 0 times the code signal has been sent.

The cams 90 of the service code wheel 7 are arranged to actuate the arm 91 of bell crank lever 92, pivoted at 93 and to en gage one end of a lever 94, located betwee the cam levers 38 and having the doubl function of aiding in the transmission 0 main signals as well as service signals.

The means for insuring perfect contw. at the marking and spacing contacts con prise a cam 95, secured to shaft 14 and r( tatable therewith. This cam engages on end of 'a lever 96, pivoted at 97, the opposii end 98 of which is provided with a pi 44is'permitted, whenever one of'the selecting 99. The lever 96 is resiliently held. by a spring 100. The pin 99 engages a lever. 101, pivoted on shaft 97, and having at its free end a knife-edge 102 adapted to engage either side of the beveled end of a resllient member 103, secured to the contact lever 47. A spring 104 is instrumental in causing resilientcontact between the co acting portions of the members 102 and 104.

The teeth of cam 95 are so arranged that the member 102 is disengaged from member 103 at the instant of sending a signal impulse, permitting the contact tongue 49 tomake contact with either the spacing or marking contacts 50 and 51, butimmediately thereafter holding the contact tongue 49 in tight contact with the contacts and during the duration of the contact successfully preventing the chattering thereof.

One of the most important features of the operation of device shown in ig. 8 consists in the fact that the position of the teeth on cam 95 in relation to'the cams 21, is such as to initiate the movementof the camlevers 38, and prepare the release of the operating levers 42 before the lever 96 enters a notch and permits the removal of the knife-edge 102 from its cooperating member 103 by means of the spring 100.- The effect will be that even at the greatest speed of signal transmission, the duration of-the impulses is absolutely equal and uniform, resulting from the exceptional quickness of movement of the contact tongue 49 from one contact point to the other'and the mechanical control of this movement. The position of the cam '95 can be so adjusted in respect to that of the cams 21 that any desired degree of exactness and uniformity of transmission may be obtained.

The operation of the organization of apparatus comprising the present invention, is as follows:

The motor 18 normally causes rotation of the main gear 15 by means of driving worm 17 Gear 15 is adapted to rotate either one of the friction disks 19 or 20. Inthe event that main signals are to be transmitted then friction disk 19 rotateswith the main gear and friction disk 20 is prevented from rotation, and, if service signals are to be trans mitted, friction disk 19 is prevented from rotation and friction disk 20 is permitted to rotate.

This latter condition results in the rotation of shaft 14 and the' cams 21 connected thereto. The cams 21 are so set in. relation to each other that the levers .38 are depressed in succession and the free end of the levers 38 removed from the ends of the operating levers 42 so that the upward movement of thelatter under the action of their springs pins 45 enters a perforation of the tape 33, the impulse controlling means. A lever 42 whose selecting pin has entered a perforation of the tape 33, is pulled upwards by its spring 44, which, in overpowering the spring 48 of the contact lever 47 causes a tilting of the latter and the transfer of the contact tongue 49 from the marking contact int 51 to the spacing contact point 50. Tl'llS results in the transmission of an impulse over the line to the distant station.

As now well known in the art, each group of five impulses, characteristic of the Baudot code, is in some systems preceded by a start impulse. In the present apparatus this is effected by one of the levers 42, not provided with a pin rod, and therefore, not controlled by the perforated tape. There are six cams on shaft 14 and a like number of cam'levers and ,operatin levers, but in a distributor employmg a ve unit Baudot and controlled by a perforated tape,

there are only five pin rods permitting to actuate the operating levers. The sixth cam,

cam lever 94 and operating lever is used not only for transmitting a start impulse,

but the same instrumentalities, except the cam, are also employed to transmit auxiliary signals, which arrangement is thought to be broadly new.

In the event that service signals are to be substituted for main signals, a handle 89 is pushed to the right, resulting in the removal of detent 83 from the notch 88 of disk 85 of the service signal device, permitting this disk to rotate by means of the friction disk 20, now being taken along by the main gear 15, while at the same time, the detent 82,, passin into the path of rotation of the stop arm 4 prevents the rotation of shaft 14 and the operation oflthe associated parts of the main signal transmission apparatus.

At the very beginning of the transmission of service signals, the bell 76 will be struck, once for each revolution of the code wheel 71, as pointed out heretofore and, as soon as handle, 89 is released, the service signal 'means completes its cycle and is arrested by detent 83, while, at the same time, detent 82 is removed from stop arm 67, and the operation of the main signalling means resumed.

Referring to the release of operating levers 42, it will be noticed that the left end "of cam levers 38, adapted to contact with cams 21, when rotating in the direction indicated by the arrow in Fig. 1, is peculiarly shaped, so as to form an initiating incline and then a cam lug. Cam 21 first engages the extreme end of the incline and begins to slowly depress the cam lever 38. This results in-a gradual removal of the right hand ends of the cam levers 38, from the left-hand ends of the actuating levers 42.

The springs 44, in contracting, move the pin rods 46 toward the tape 33 and, as soon as a cam 21 reaches the end of the incline of cam levers 38 and engages the cam lug, a quick final release of the actuating levers 42, will result and the pin be permitted i304: enter a perforation of tape 33. If such gradual release of the actuating levers 42, were not provided for, springs 44 may exert such a sudden and extended pull, that pins 45 may be moved with sufficient force to even perforate an unperforated portion of the tape.

What is claimed is 1. Apparatus for transmitting code combinations of electrical impulses comprising a single transmitting contact, actuating means for said transmitting contact, and means embodying a perforated control tape for controlling said actuating means in accordance with the code combinations to be transmitted.

2. In an apparatus for transmitting impulses, a transmitting contact, other con-- tacts'co-acting with said transmitting contact, means for .actuating said transmitting contact in accordance with the impulses to be transmitted, and means for insuring engagem entpf said transmitting contacts with one of said other contacts during the interval alloted to each transmitted impulse.

3. A transmitter comprising contact carrying means; mechanism comprising a rotatable cam shaft for supplying operating energy to said contact carrying means and a perforated tape controlling the operation of said contact carrying means; and means controlled by the tension of said tape for stopping rotation of said cam shaft only betwien completed signal combinations of im- 11 Q88. p 4. In an automatic impulse transmitter, the combination of a single current reversing member, a plurality of tape controlled members controlling said current reversing member, and means for consecutively operat- H ing said tape controlled members. whereby a perforated tape can control the. position of said current reversing member.

5. Apparatus for transmitting code combinations of electrical impulses comprising a single transmitting contact, actuating means for said, transmitting contact, means embodying a perforated control tape for controlling said actuating means in accordance with the code' combinations to be transmitted, said actuating means comprising a plurality of members controlled in operation by said tape, and means for operating said members in successive order.

6. Apparatus for transmitting code com binations of electrical impulses comprising a single transmitting contact, actuating means for said transmitting contact, means embodying a. perforated control tape for controlling sald actuating means in accprdance with the code combinations to be transmitted, said actuating means comprising a plurality of members, and means for operating said members in successive order, said means comprising. a rotatable cam shaft.

7. Apparatus for-transmitting code com- 0 binations of electrical impulses comprising a single transmitting contact, actuating means for said transmitting contact, means embodying a perforated control tape for controlling said actuating means in accordance with the code combinations to be transmitted, said actuating means comprising a plurality of members controlled in operation-by said tape, means for operating said members in successive order, said means comprising a rotatable cam shaft, a clutch for rotatin said cam shaft, and means for driving said 0 utch.

8. Apparatus for transmitting code combinations of electrical impulses comprising a single transmitting contact, actuating means for said transmitting contact, means embodying a perforated control tape forcontrolling said actuating means in accordance with the code combinations to be transmitted, said actuating means comprising a plurality of members, means for operating said members in successive order, said means comprising a rotatable cam shaft and elements actuated by said cam shaft, and actu- 95 ating said members.

9. Apparatus for transmitting code combinations of electrical impulses comprising a single transmitting contact, actuating means for said transmitting contact/means I00 embodying a perforated control tape for controlling said actuating means in accordance with the code combinations to be transmitted, said actuating means comprising a plurality of members, means for operating 10.\ said members in successive order, said means comprising a rotatable cam shaft and means for driving said perforated tape from said. cam shaft.

10. Apparatusfor transmitting code combinations of electrical impulses comprising a single transmitting contact, actuating means for said transmitting contact, means embod" n'g a perforated control tape for contro ing said actuating; means in accordance with the code combinations to be transmitted, said actuating means comprising a plurality of members, means for operating said members in successive order, said means comprising a rotatable cam shaft, means for I plurality of members, means for operating said members in successive order, sald means comprising a rotatable cam shaft, means for driving said tape comprising a step by step advancing mechanism for the tape, actuated to advance the tape only\between the transmission of completed code combinations of impulses; anda special cam on said cam shaft for operating saidstep by step mechanism. I

12. Apparatus for transmitting code combinations of electrical impulses comprising a single transmitting contact, actuating means for said transmitting contact, means embodying a perforated controltape for controlling said actuating means in accordance with the code combinations to be transmitted, and means for preceding each code combination ofll impulses with a fixed and invariableim- 13. Apparatus for transmitting code combinations of electrical impulses comprising a single transmitting contact, actuating means for said transmitting contact, means embodying a perforated control tape for controlling said actuating means in accordance with the code combinations to be transmitted, means for preceding each code combination of impulses with a fixed and invariable impulse, said last mentioned means being independent of said perforated tape control.

14. Apparatus for transmitting code combinations of electrical impulses comprising a rotatable cam, a single transmitting contact, actuating means for said transmitting contact, means embodying a perforated control tape for controlling said actuating means in accordance with the code combinations to be transmitted, me-ans for preceding each code combination of impulses with a fixed and invariable impulse, said last mentioned means being independent of said perforated tape control, and comprising an actuating member for said single contact operated by said rotatable cam.

15. Apparatus for transmitting co'de combinations of electrical impulses comprising a single transmitting contact, actuating means for said transmitting contact, means embodying a perforated control tape for controlling said actuating means in accordance with the code combinations to be transmitted, and auxiliary automatic means for operating said single contact independently of said tape control, to transmit code combinations of impulses.

16. Apparatus for transmitting code combinations of electrical impulses comprising a single transmitting contact, actuating means for said transmitting contact, means embodying a perforated control tape for controlling said actuating means in accordance with the code combinations to be transmitted, auxiliary automatic means for operating said single ,'contact independently of said tape control, to transmit code combinations of impulsesand means for interrupting operation of said tape control means during the period when said auxiliary automatic means is operating.

17. Apparatus for transmitting code combinations of electrical impulses comprising a single transmitting contact, actuating means for said transmitting contact, means embodying a perforatedcontrol tape for controlling said actuating means in accordance with the code combinations to be transmitted, auxiliary automatic means for operating said single contact independently of said tape control, to transmit code combinations of impulses and means for interrupting the operation of said auxiliary automatic means when said tape control means is in operation.

18. Inan'apparatus for transmitting impulses, a transmitting contact, other con-' tacts co-acting with said transmitting contact, means for actuatin said transmitting contact in accordance wlth the impulses to be transmitted, means for insuring engagement of said transmitting contact with one of said other contacts during the interval allotted to each transmitted impulse, said last mentioned means comprising a locking member for locking said transmitting contact in actuated position.

19. In an apparatus for transmitting impulses, a transmitting contact, other contacts co-acting with said transmitting contact, means for actuating said transmitting contact in accordance with the impulses to be transmitted, means for insuring engagement of said transmitting contacts with one of said other contacts during the interval allotted to each transmitted impulse, said last mentioned means comprising a locking member for locking said transmitting contactjn actuated position, said locking member being adapted to assist movement of said transmitting contact.

20. In an apparatus for transmitting impulses, a rotatablecam, a transmitting contact, other contacts co-acting with said transmittin contact, means for actuating said transmltting contact in accordance with-the impulses to be transmitted, means for insuring engagement of said transmitting con-' tacts with one of said other contacts during the interval allotted to each transmitted impulse, said last mentioned means comprising a locking member for locking said transmitting contact in actuated position, said locking member being adapted to assist movement of said transmitting contact, and controlled by said rotatable cam driven in timed relation with the transmission of impulses.

21-. In an apparatus for transmitting inipulses, actuating springs, a transmit contact other-contacts co-acting with sai transmittin contact, means for actuating said transmitting contact in accordance with the impulses to be transmitted, means for insuring engagement of said transmitting contacts with one of said other contacts during the interval allotted to each transmitted impulse, said last mentioned means comprising a locking member for locking said transmitting contact, in actuated position, said locking member being adapted to assist movement of said transmittin contact controlled by a rotatable cam driven in timed relation with the transmission of impulses and actuated in its locking and unlocking movement by energy stored in said actuating springs.

22. Apparatus for transmitting code combinations of electrical impulses comprising a single transmitting contact, springs asso-- means in accordance with the code combinas tions to be transmitted, said actuating means comprising a plurality of members, means for operating said members in successive order, each of said members being actuated solely by energy stored in said springs.

24. Apparatus for transmitting code combinations of electrical impulses comprising a single transmitting contact, actuating means for said transmitting contact, means embod g a (perforated control tape for contro g sai actuating means in accordance with the .code combinations to be transmitted, and means controlled by the tension of said control tape for stopping transmission onl between completed combinations of imp es.

.25. A transmitter comprising contact carrying means; mechanism comprising a rotatable cam shaft for supplying operating energy to said contact carrying means, a perforated tape controlling the operation of said contact carrying means, and means controlled by the tension of said tape for stopping rotation of said cam shaft only between completed signal combinationsof impulses, said last mentioned means comprising a sto member adapted to be interposed in the pat of a stop projection carried by said cam shaft.

26. A tr comprising contact carrying means, mechanism comprising a retatable cam shaft for supplying operating energy to said contact carrying means, a perforated tape controlling the operation of .saidcontact carrying means, a tape actuated lever, a spring connection, and means controlled by the tension of said tape for stopping rotation of said cam shaft only between completed signal combinations of impulses, said last mentioned means comprising a stop member adapted to be interposed in the path of a stop projection carried by said cam shaft, said stop member being actuated by means of said tape actuated lever and spring connection. I

27. In an automatic impulse transmitter, the combination of a single current reversing member, a plurality of controlled members controlling said current reversing member, and means, including a perforated tape, for consecutively operating said controlled members for controlling the position of said current reversing member.

28. An automatic impulse transmitter comprising mechanically operated means, a

tion of said contact, a tape for controlling.

said members, mechanically operated means for controlling the successive actuation of said contact in accordance with the position of the members, and means for operating said contact invariably at the commencement of each signal period.

30. An automatic impulse transmitter comprising a single transmitting contact, a plurality of members regulating the actuation of said contact, a tape for controlling said members, mechanically operated means consequently releasing said members to actuate said contact, and means for operating said contact invariably at the commencement and close ofeach signal period.

31. An automatic impulse transmitter comprising a single transmitting contact, a plurality of members controlling the actuation of saidzcontact, a tape for controlling said members, mechanically operated means for releasing said members for actuating said contact,'a lever, and a cam acting on said lever for operating said contact invariably at the commencement and close of each si al period.

32. an automatic tape transmitter, a perforated ta e, a single transmitting contact, means or actuatin said contact in accordance with perforations in said tape andmeans under the control of the tape for automatically starting the transmitter.

33. In an automatic tape transmitter, a perforated tape, a single .transmitting contact, means for actuating said contact in accordance with perforations in said tape, and means under the control of the tape for automatically stopping the transmitter.

34. In an automatic tape transmitter, a perforated tape, a single transmitting contact, means for actuating said contact in accordance with the perforations in said tape and mechanically operated means under t e control of the tape for automatically starting and stopping the transmitter.

'35. In combination, a perforated tape, a single transmitting contact, mechanically operated means for actuating said contact in accordance with the perforations in said tape, and a tape lever operated by thetension of the tape to mechanically stop the transmitter.

36. In combination, a perforated tape, a single transmitting contact, mechanically operated means for actuating said contact 1n accordance with the perforations in said tape, and a tape lever controlled by the tension of the tape to mechanically start the transmitter.

37. In combination, a perforated tape, a single transmitting contact, mechanically operated means for actuating said contact n accordance with the perforations in said tape, and a tape lever controlled by the tension of the tape to mechanically start and stop the transmitter.

38. In combination, a perforated tape, a single transmitting contact, mechanically operated means-for actuating said contact in accordance with the perforations in sa1d tape, and means operate solely through the instrumentalities of mechanical movements for automatically stopping and starting the transmitter.

39. An automatic tape transmitter comprising a single transmitting contact, a pluralit of tape controlled members for controlling the actuation of said contact, and spring means for elevating said tape controlled members when a perforation is brou ht into alignment therewith for causing t e corresponding actuation of the contact.

40. An automatic tape "transmitter comprising a single transmitting i rcontact, a plu-' rality of tap ntrolled members for controlling the ation of said contact, and mechanically operated means for elevating said tape controlled members when a perforation is brought into alignment therewith for causing the corresponding actuatlon of the contact.

41. In an automatic impulse transmitter, a single transmitting contact, a plurality of fingers for controlling the actuatton of said contact, an operating member individual to each of said fingers, a rotating shaft, a plurality of cams secured to said shaft, one for each of said operating members and. arranged to operate said members in succession whereby said contact is actuated in accordance with the position of said fingers.

42. In an automatic impulse, a perforated tape, a single transmitting contact, a plurahtyof fingers for controlling the actua tion of said contact, an operating member individual to each of said fingers, a rotatin shaft, a plurality of cams secured to sai shaft, one for each'of said operating members and arranged to operate said members in succession whereby said contact is to be actuated in accordance with the position of said fingers, and means under the control of said shaft for automatically stopping the rotation of said cams.

43. In a tele raph transmitter, a perforated tape, a nger therefor, means normally urging said finger into engagement with said tape, and means for preventing said finger from perforating said tape while being brought into engagement therewith.

44. In a telegraph transmitter, a perforated tape, a finger therefor urged into engagement with said tape, and means for controlling the force with which said finger engages said tape.

45. In a telegraph transmitter, a perforated tape, a finger therefor, means for ur ing said finger into engagement with said tape, and means for controlling the release of said last mentioned means.

- 46. A transmitter comprising a perforated .tape, a contact carrying means controlled by said perforated tape, a plurality of cam members for sequentially releasing said contact carrying means for control by said perforated tape, said cam members being so desi ed as to first gradually and then very sud enly release said contact carrying means.

47. In a transmitter, a perforated tape, 'a plurality of fingers arranged to move into the perforations of said tape, said fingers being held normally out of engagement with said tape, a plurality of cam members for sequentially releasing said fingers to engage said tape, said cam members being so arranged as to first gradually release said fingers' and'then suddenly completely release said fingers.

48. In a telegraph transmitter, a perforated tape, a finger normally held out of engagement with said tape, means for gradually permitting said fingers to move into engagement with said tape, and means operativeafter said finger has come into engagement with said tape for comletely releasingprises bringing the hnger gradually into engagement with the tape and after the enlen means in operative gagement suddenly releasing the finger to permit it to move into a perforatlon.

50. In a telegraph transmitter, a perforated tape, a finger therefor, said finger being normally locked out of engagement with said tape, means urgingsaid finger into engagement with said tape, and means for gradually releasing said finger until it engages said tape, said 'means'thereafter completely releasing said finger.

51. In a telegraph transmitter, contact carrying means, means for operating said contact carrying means, and means for thereafter latching said contact carrying osition.

52. In a telegraph transmitter, a contact carrying means having a plurality of positions, means for selectively operating said contact carrying means to either of its positions, means for thereafter latching said contact carryin means in operated position, said means being'alto operative to'release said contact carrying means from its operated position;

53. In a telegraph transmitter, contact carrying means, means for selectively operatm said contact carr ing means, and secon means for controlling-"the. length of time durin which the contact carrying 'means is he din its operated position.

54. In a telegraph transmitter, contact carrying means, a perforated :tape for operating said contact carrying means, and

means for controlling the length of timeduring which said contact carrying means" remain in the position operatedby said perforated tape.

55. In a telegraph transmitter, a contact carrying means, and means including a per forated tape forcontrolling said contact carrying means to transmit code 'combinationsof impulses which are of a predetermined h. i I 56. In atelegraph traiismitter, a per.-

'forated tape, a single contact controlled by preventing chattering of said contact carry-, cu

said perforated ta e' to transmit code combinations of impu :es, and-means for controlling the length of said impulses.

57. In a telegraph transmltter, contact carrying means, a perforated tape for operating said contact carrying means, and means released for operation following the operation of said contact carrying means under control of said perforated tape for ing means 1n operated position. 1

58. In a telegraph transmitt j, ,a perforated tape, contact carrying means, a plurality of cam members, means sequentially released by said cam members for operating said contact member under control of said 1 Q64. In a telegraph tape and a second means including cam members released in timed relation with said first mentioned means for positively operating said contact carrying means in position.

59. In a telegraph device, members having a plurality of positions selectively operated, and means released for operationin timed relation with the selective operation of said first mentioned member for ositively moving said member in operate po sition.

60. In a telegraph device, a member having a plurality of positions, means for selectivelyoperating said member to said positions, and means for maintaining said memher in said operated position for a predetermined length of time.

61. In a telegra h device, a member having a plurality o" positions, means including cam members for operating said member to either of its positions, and means including ,other cam members for latching said member in o erated position. v 62. In. a telegraph device, a member having a plurality ofpositions, means including cam members for operating said member to either of its positions, and second means including other cam members for determining the length of time said member will remain in operated position.

63. In a telegraph transmitter, contact carrying means, a perforated tape for oper-v ating said contact carrying means to trans- ,mit a code combination of impulses and additional means for transmitting an impulse of a pre-determinedcharacter at the beginning and'at the end of each code combination. y transmitter, contact carrying means for transmitting code com-' binations of impulses, a perforated tape,

cam" members co-operating with said perforated tape for operating said contact carrying and additional cam members for con- 7 trolling said contact carrying, means to transmit an impulse of a pre-determined character at the beginning and at the end of each code combination.

65. In a telegraph transmitter, a contact carrying means, cam members and a perforated tape, said contact carrying means being 0 erated by. the perforations in said tape an under control of said cam members or directly by said cam members.

66. In a telegraph transmitter, a single contact member, a perforated tape, and

means operable under control of the perforations in thetape for directly operating said contact carrying means.

67. In a-telegraph transmitter, single contact means for transmitting impulses, a perforated tape, and means operated by the perforation in the tape for directly operating said impulse transmitting means.

68. In a telegraph transmitter, contact carrying means, a perforated tape, locked means under control of the perforations in said tape for operating said contact carrying means, and second means for releasing said first mentioned means to be operated by said perforated tape.

69. In a telegraph transmitter, contact carrying means, a perforated tape, normally lpcked means under control of the perforations in said tape for operating said contact carrying means, and cam members forreleasing said first mentioned means to be operated by said perforated tape.

70. A transmitter comprising a common contact tongue; a plurality of members operable to actuate said tongue, a perforated tape controlling the operation of said members, and spring actuated means applying the entire operating energy to said members.

71. A transmitter comprising a plurality of contact operating members, a perforated tape controlling the operation of said members in accordance with signals to be transmitted, a rotatable cam shaft for causing successive operation of said members, and a stop for said cam shaft operable by the tension of said tape.

72. A transmitter comprising a plurality of contact operating members: contact carrying means operated by said operating members; a perforated tape controlling the operation of said members in accordance with the code combinations of selecting conditions to be transmitted; actuating means for said members; auxiliary means adapted to operate said series of code combinations, and a common driving means for said actuating means and said auxiliary means.

73. A transmitter comprising. a single transmitting contact; means for actuating said contact to transmit code combinations of electrical impulses, and auxiliary signalling means adapted to actuate said contact in accordance with a predetermined series of signals.

74. In a telegraph transmitter, a contact carrying means, means for operating said contact carrying means to transmit a code combination of impulses, and auxiliary neans for operating said contact carrying means, and manually operated means for si-- multaneously rendering one of said means non perative and the other operative.

75-; In a telegraph transmitter, contact carrying means, a first means for controlling the operation of said contact carrying means, a second means for controlling the operation of said contact carrying means,

and means for putting said contact carrying.

means under control of either of said operating means.

76. In a telegraph transmitter, contact carrying means, a first means for controlling the operation of said contact carrying means, a second means for controlling the operation of said contact carrying means and manually operated means for puttin said contact carrying means under contro of either of said operating means.

77. In a telegraph transmitter, contact carrying means, means for operating said contact carrying means, second means for operating said contact carrying means, said 79. In a telegraph transmitter, contact carrying means, a plurality of rotating cam members for controlling the operation of said contact carrying means, second rotating cam members for controlling the o eration of said contact carrying means, sai second contact carrying means being normally latched out of operation and means for simultaneously releasing said second means and latching said first mentioned means.

80. In a telegraph transmitter, contact carrying means, a plurality of rotating cam members for controlling the operation of said contact carrying means, second rotating cam members for controlling the operation of said contact carrying means, said second contact carrying means being normally latched out of operation and manually operated means for simultaneously releasing said second means and latching said first mentioned means.

81. In a telegraph transmitter, contact carrying means, rotating cam members for controlling the operation of said contact carrying means, second rotating cam members for controlling the operation of said contact carrying means, said second cam members being normally latched against operation, and means for releasing said second cam members for operation said means bein also operative to latch said first mentione means against operation invariably at a predetermined position in its rotation.

82. In a telegraph transmitter, contact carrying means, rotating cam members for controlling the operation of said contact carrying means, second rotating cam members for controlling the operation of said contact carrying means, said second cam members being normally latched against operation, and means for releasing'said second cam members for operation, said means being also operative to latch said first mentioned means against operation at a predetermined position in its rotation.

83. In a telegraph transmitter, contact carrying means, rotating cam members for controlling the operation of said contact carrying means, said second cam members being normally latched against operation, and means for releasing said second cam members for operation, said means being also operative to latch said first mentioned means against operation at a predetermined position in its rotation, said means being also operative when-restored to again latch said second cam members.

84. In a telegraph transmitter, contact carrying means, rotating cam members for controlling the operation of said contact carrying means, second rotating cam members for controlling the operation of said contact carrying means, said second cam members being normally latched against operation, and means for releasing said second cam members for operation, said means being also operative to latch said first mentioned means against operation at a predetermined position in its rotation, said means being also operative when restored to again latch 'said second cam members at a pre-determined position.

85. In a telegraph transmitter, contact carrying means, rotating cam members for controlling the operation of said contact carrying means, second rotating cam members for controlling the operation of said contact carrying means, said second cam members being normally latched against operation, and means for releasing said second cam members for operation, said means being also operative to latch said first mentioned means against operation at a pre-determined position in its rotation, said means being also operative when restored to again latch said second cam members invariably at a pre-determined position.

86. In a telegraph transmitter, a rotating cam shaft, second rotating cam shaft, contact carrying means operable under control of either of said cam shafts, and means whereby said control is switched only at a pre-determined position in the rotation of either of said cam shafts.

87. In a telegraph transmitter, a contact carrying means, means for controlling the operation of said contact carrying means to transmit a code combination of impulses, second means for controlling the 'operation of said contact carrying means to transmit a code combination of impulses, and means for switching the control of said contact carrying means to either of said control means, said last mentioned means being effective to perform said switching operation only at the end of the transmission of a code combination of impulses. I

88. In a telegraph transmitter, contact carrying means, a plurality of means for controlling the operation of said contact carrying means to transmit code combinations of impulses, and means for switching the control of said contact carrying means to any of said control means, said switching means being effective only at the conclusion of the transmission of a code combination of impulses.

89. In a telegraph transmitter, contact carrymg means, a perforated tape, rotating cam members, means operated by the perforations in said tape under control of said rotating cam members for operating said contact carrying means, second cam members for controlling the operation of said contact carrying means independent of said tape, and means for switching said control to either of said rotating cam members.

90. In a telegraph transmitter, contact carrying means, a perforated tape, rotating cam members, means operated by the perforation in said ta e under control of said rotating cam mem rs for operating said contact carrying means, second cam members for controlling the operation of said contact carrying means independent of said tape, and means for simultaneously rendering one of said rotating cam members nonoperative and starting the other into operation.

91. In a telegraph transmitter, a tape comprising perforations of various combinations arranged transversely with respect to said tape and a single contact transmitter controlled by said perforation for transmitting code combinations of impulses in accordance with said perforations.

92.. In a telegraph transmitter, a perforated tape, and a single contact transmitter for transmitting code combinations of impulses in accordance with the perforations of said tape for each position of said tape.

93. In a telegraph transmitter, a perforated tape, a single contact transmitter controlled by the perforations of said tape for transmitting code combinations of impulses while said tape is held stationary.

94. In a telegraph transmitter, a perforated tape, a single contact, means for sequentially placing said contact under con trol of the succeeding perforations of said tape while the tape is held stationary, and means operative following the transmission of said code for stepping said tape to a succeeding code combination of perforations.

95. In a telegraph transmitter, a tape, perforated in code combinations, a single contact transmitter, cam members for sequentially placing said contact under control of said perforations while said tape is held stationary, and a cam member operative following the operation of all the perforations of the code for stepping said tape to the next set of code combinations.

96. In a telegraph transmitter, a tape provided with perforations transversely with respect to said tape, a single contact transmitter, cam operated means for sequentially placing said contact transmitter under control of said perforations while said tape is held stationary, and a cam member operative following the transmission of the code for stepping said tape to a succeeding code combination of perforations..

97 In a transmitter for telegraph systems, in which the signals each comprise astart impulse followed by a definite number of selecting impulses, a set of tape-controlled selectors, a rotary member, motor-driven clutch means for continuously advancing said member during each signal period,

means mechanically actuated by said member for feeding the tape and for moving said selectors to and from the tape, contact means operated under the sole mechanical control of said actuating member for imparting the start impulses and under the joint mechanical control of said member and said selectors for transmitting the selecting impulses, and a tape-controlled stop operable to arrest said rotatable member only between completed signals.

' 98. In a telegraph transmitting apparatus, transmitting contact means, a rotary, mechanically acting cam member adapted by its rotary movement to eifect the operation of said cont-act means and thereby transmit a start impulsefollowed by a definite number of selecting impulses during each signal period, a set of tape-controlled, mechanically acting selectors for varying the selecting impulses and a mechanically acting, tape-con trolled stop device operable to arrest said rotary cam member only between completed signals.

99. In apparatus for transmitting code combinations of impulses, impulse transmitting contacts, a set of impulse selectors, a

rotary contact actuating member cooperatingwith said selectors to transmit the selected impulses, a second rotary contact actuating member for determining the lengths of the transmitted impulses, and means for continuously advancing said rotary actuating members in definite relation during each signal period.

100. In a telegraph transmitter having ting code combinations of impulses, contactactuating means comprising a motor driven shaft, a set of successively acting cam sections on said shaft, a corresponding set of contact actuating members individual to said cam sections and successively actuated thereby to effect the transmission of selected impulses, a second set of cam sections on said shaft and a common member actuated thereby for determining the lengths of the trans-- mitted impulses.

102. In a telegraph transmitter having mechanically actuated contacts for transmitting code combinations of impulses, a set of tape-controlled impulse selectors, a rotary contact actuating member cooperating with said selectors, an auxiliary contact actuating member for transmitting a code combination of impulses independently of said selectors and interlocking means between said actuators to prevent the simultaneous operation thereof.

103. In a telegraph transmitter having cam actuated transmitter contacts for transmitting code combinations of impulses, a set of tape-controlled impulse selectors, a ro' tary contact actuating cam member cooperatmg wlth said selectors, an auxillary rotary contact actuating cam member for-transmit- .ting a code combination of impulses independently of said selectors, and wholly mechanical start-stop interlocking means interposed between said actuators for preventing the simultaneous operation thereof and operable to initiate and arrest the same only between completed signals.

Signed at Brooklyn, in the county of Kings and State of New York, this first day of October, 1921.

EDWARD E. KLEINSCHMIDT. 

